This wrist band is one of the best. Very inexpensive and does great job. Also it is very absorbent.
These wristbands really work if you want to "wipe your brow" without carrying a towel around on the court. Of course they are great for keeping the sweat from running down your arm onto your hands.
I was looking for a wide sweatband for my wrist and this was perfect.
I like to use these for tennis. The only downfall, but would also be the case for any sweatband, is that they get very heavy when wet. I try to change it after each set. The definitely help your hand stay dry and are great for drying your brow.